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1da177e4 LT |
1 | /* |
2 | * sata_promise.c - Promise SATA | |
3 | * | |
4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> | |
5 | * Please ALWAYS copy linux-ide@vger.kernel.org | |
6 | * on emails. | |
7 | * | |
8 | * Copyright 2003-2004 Red Hat, Inc. | |
9 | * | |
1da177e4 | 10 | * |
af36d7f0 JG |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2, or (at your option) | |
14 | * any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; see the file COPYING. If not, write to | |
23 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | * | |
26 | * libata documentation is available via 'make {ps|pdf}docs', | |
27 | * as Documentation/DocBook/libata.* | |
28 | * | |
29 | * Hardware information only available under NDA. | |
1da177e4 LT |
30 | * |
31 | */ | |
32 | ||
33 | #include <linux/kernel.h> | |
34 | #include <linux/module.h> | |
35 | #include <linux/pci.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/blkdev.h> | |
38 | #include <linux/delay.h> | |
39 | #include <linux/interrupt.h> | |
40 | #include <linux/sched.h> | |
a9524a76 | 41 | #include <linux/device.h> |
1da177e4 | 42 | #include <scsi/scsi_host.h> |
193515d5 | 43 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
44 | #include <linux/libata.h> |
45 | #include <asm/io.h> | |
46 | #include "sata_promise.h" | |
47 | ||
48 | #define DRV_NAME "sata_promise" | |
7bdd7208 | 49 | #define DRV_VERSION "1.03" |
1da177e4 LT |
50 | |
51 | ||
52 | enum { | |
53 | PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */ | |
54 | PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */ | |
55 | PDC_TBG_MODE = 0x41, /* TBG mode */ | |
56 | PDC_FLASH_CTL = 0x44, /* Flash control register */ | |
57 | PDC_PCI_CTL = 0x48, /* PCI control and status register */ | |
58 | PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */ | |
59 | PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */ | |
60 | PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */ | |
61 | PDC_SLEW_CTL = 0x470, /* slew rate control reg */ | |
62 | ||
63 | PDC_ERR_MASK = (1<<19) | (1<<20) | (1<<21) | (1<<22) | | |
64 | (1<<8) | (1<<9) | (1<<10), | |
65 | ||
66 | board_2037x = 0, /* FastTrak S150 TX2plus */ | |
67 | board_20319 = 1, /* FastTrak S150 TX4 */ | |
f497ba73 | 68 | board_20619 = 2, /* FastTrak TX4000 */ |
1da177e4 LT |
69 | |
70 | PDC_HAS_PATA = (1 << 1), /* PDC20375 has PATA */ | |
71 | ||
72 | PDC_RESET = (1 << 11), /* HDMA reset */ | |
50630195 JG |
73 | |
74 | PDC_COMMON_FLAGS = ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST | | |
75 | ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI, | |
1da177e4 LT |
76 | }; |
77 | ||
78 | ||
79 | struct pdc_port_priv { | |
80 | u8 *pkt; | |
81 | dma_addr_t pkt_dma; | |
82 | }; | |
83 | ||
84 | static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg); | |
85 | static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); | |
86 | static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); | |
87 | static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs); | |
88 | static void pdc_eng_timeout(struct ata_port *ap); | |
89 | static int pdc_port_start(struct ata_port *ap); | |
90 | static void pdc_port_stop(struct ata_port *ap); | |
2cba582a JG |
91 | static void pdc_pata_phy_reset(struct ata_port *ap); |
92 | static void pdc_sata_phy_reset(struct ata_port *ap); | |
1da177e4 | 93 | static void pdc_qc_prep(struct ata_queued_cmd *qc); |
057ace5e JG |
94 | static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf); |
95 | static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf); | |
1da177e4 LT |
96 | static void pdc_irq_clear(struct ata_port *ap); |
97 | static int pdc_qc_issue_prot(struct ata_queued_cmd *qc); | |
98 | ||
374b1873 | 99 | |
193515d5 | 100 | static struct scsi_host_template pdc_ata_sht = { |
1da177e4 LT |
101 | .module = THIS_MODULE, |
102 | .name = DRV_NAME, | |
103 | .ioctl = ata_scsi_ioctl, | |
104 | .queuecommand = ata_scsi_queuecmd, | |
105 | .eh_strategy_handler = ata_scsi_error, | |
106 | .can_queue = ATA_DEF_QUEUE, | |
107 | .this_id = ATA_SHT_THIS_ID, | |
108 | .sg_tablesize = LIBATA_MAX_PRD, | |
109 | .max_sectors = ATA_MAX_SECTORS, | |
110 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, | |
111 | .emulated = ATA_SHT_EMULATED, | |
112 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
113 | .proc_name = DRV_NAME, | |
114 | .dma_boundary = ATA_DMA_BOUNDARY, | |
115 | .slave_configure = ata_scsi_slave_config, | |
116 | .bios_param = ata_std_bios_param, | |
1da177e4 LT |
117 | }; |
118 | ||
057ace5e | 119 | static const struct ata_port_operations pdc_sata_ops = { |
1da177e4 LT |
120 | .port_disable = ata_port_disable, |
121 | .tf_load = pdc_tf_load_mmio, | |
122 | .tf_read = ata_tf_read, | |
123 | .check_status = ata_check_status, | |
124 | .exec_command = pdc_exec_command_mmio, | |
125 | .dev_select = ata_std_dev_select, | |
2cba582a JG |
126 | |
127 | .phy_reset = pdc_sata_phy_reset, | |
128 | ||
1da177e4 LT |
129 | .qc_prep = pdc_qc_prep, |
130 | .qc_issue = pdc_qc_issue_prot, | |
131 | .eng_timeout = pdc_eng_timeout, | |
132 | .irq_handler = pdc_interrupt, | |
133 | .irq_clear = pdc_irq_clear, | |
2cba582a | 134 | |
1da177e4 LT |
135 | .scr_read = pdc_sata_scr_read, |
136 | .scr_write = pdc_sata_scr_write, | |
137 | .port_start = pdc_port_start, | |
138 | .port_stop = pdc_port_stop, | |
374b1873 | 139 | .host_stop = ata_pci_host_stop, |
1da177e4 LT |
140 | }; |
141 | ||
057ace5e | 142 | static const struct ata_port_operations pdc_pata_ops = { |
2cba582a JG |
143 | .port_disable = ata_port_disable, |
144 | .tf_load = pdc_tf_load_mmio, | |
145 | .tf_read = ata_tf_read, | |
146 | .check_status = ata_check_status, | |
147 | .exec_command = pdc_exec_command_mmio, | |
148 | .dev_select = ata_std_dev_select, | |
149 | ||
150 | .phy_reset = pdc_pata_phy_reset, | |
151 | ||
152 | .qc_prep = pdc_qc_prep, | |
153 | .qc_issue = pdc_qc_issue_prot, | |
154 | .eng_timeout = pdc_eng_timeout, | |
155 | .irq_handler = pdc_interrupt, | |
156 | .irq_clear = pdc_irq_clear, | |
157 | ||
158 | .port_start = pdc_port_start, | |
159 | .port_stop = pdc_port_stop, | |
374b1873 | 160 | .host_stop = ata_pci_host_stop, |
2cba582a JG |
161 | }; |
162 | ||
98ac62de | 163 | static const struct ata_port_info pdc_port_info[] = { |
1da177e4 LT |
164 | /* board_2037x */ |
165 | { | |
166 | .sht = &pdc_ata_sht, | |
50630195 | 167 | .host_flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA, |
1da177e4 LT |
168 | .pio_mask = 0x1f, /* pio0-4 */ |
169 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
170 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ | |
2cba582a | 171 | .port_ops = &pdc_sata_ops, |
1da177e4 LT |
172 | }, |
173 | ||
174 | /* board_20319 */ | |
175 | { | |
176 | .sht = &pdc_ata_sht, | |
50630195 | 177 | .host_flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA, |
1da177e4 LT |
178 | .pio_mask = 0x1f, /* pio0-4 */ |
179 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
180 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ | |
2cba582a | 181 | .port_ops = &pdc_sata_ops, |
1da177e4 | 182 | }, |
f497ba73 TL |
183 | |
184 | /* board_20619 */ | |
185 | { | |
186 | .sht = &pdc_ata_sht, | |
50630195 | 187 | .host_flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS, |
f497ba73 TL |
188 | .pio_mask = 0x1f, /* pio0-4 */ |
189 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
190 | .udma_mask = 0x7f, /* udma0-6 ; FIXME */ | |
2cba582a | 191 | .port_ops = &pdc_pata_ops, |
f497ba73 | 192 | }, |
1da177e4 LT |
193 | }; |
194 | ||
3b7d697d | 195 | static const struct pci_device_id pdc_ata_pci_tbl[] = { |
1da177e4 LT |
196 | { PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
197 | board_2037x }, | |
07c1da23 JG |
198 | { PCI_VENDOR_ID_PROMISE, 0x3570, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
199 | board_2037x }, | |
4c3a53d4 FJ |
200 | { PCI_VENDOR_ID_PROMISE, 0x3571, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
201 | board_2037x }, | |
1da177e4 LT |
202 | { PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
203 | board_2037x }, | |
204 | { PCI_VENDOR_ID_PROMISE, 0x3375, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
205 | board_2037x }, | |
206 | { PCI_VENDOR_ID_PROMISE, 0x3376, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
207 | board_2037x }, | |
208 | { PCI_VENDOR_ID_PROMISE, 0x3574, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
209 | board_2037x }, | |
210 | { PCI_VENDOR_ID_PROMISE, 0x3d75, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
211 | board_2037x }, | |
c45154a3 EK |
212 | { PCI_VENDOR_ID_PROMISE, 0x3d73, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
213 | board_2037x }, | |
1da177e4 LT |
214 | |
215 | { PCI_VENDOR_ID_PROMISE, 0x3318, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
216 | board_20319 }, | |
217 | { PCI_VENDOR_ID_PROMISE, 0x3319, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
218 | board_20319 }, | |
93090495 DD |
219 | { PCI_VENDOR_ID_PROMISE, 0x3519, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
220 | board_20319 }, | |
08b791c0 OM |
221 | { PCI_VENDOR_ID_PROMISE, 0x3d17, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
222 | board_20319 }, | |
1da177e4 LT |
223 | { PCI_VENDOR_ID_PROMISE, 0x3d18, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
224 | board_20319 }, | |
225 | ||
f497ba73 TL |
226 | { PCI_VENDOR_ID_PROMISE, 0x6629, PCI_ANY_ID, PCI_ANY_ID, 0, 0, |
227 | board_20619 }, | |
228 | ||
1da177e4 LT |
229 | { } /* terminate list */ |
230 | }; | |
231 | ||
232 | ||
233 | static struct pci_driver pdc_ata_pci_driver = { | |
234 | .name = DRV_NAME, | |
235 | .id_table = pdc_ata_pci_tbl, | |
236 | .probe = pdc_ata_init_one, | |
237 | .remove = ata_pci_remove_one, | |
238 | }; | |
239 | ||
240 | ||
241 | static int pdc_port_start(struct ata_port *ap) | |
242 | { | |
243 | struct device *dev = ap->host_set->dev; | |
244 | struct pdc_port_priv *pp; | |
245 | int rc; | |
246 | ||
247 | rc = ata_port_start(ap); | |
248 | if (rc) | |
249 | return rc; | |
250 | ||
251 | pp = kmalloc(sizeof(*pp), GFP_KERNEL); | |
252 | if (!pp) { | |
253 | rc = -ENOMEM; | |
254 | goto err_out; | |
255 | } | |
256 | memset(pp, 0, sizeof(*pp)); | |
257 | ||
258 | pp->pkt = dma_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL); | |
259 | if (!pp->pkt) { | |
260 | rc = -ENOMEM; | |
261 | goto err_out_kfree; | |
262 | } | |
263 | ||
264 | ap->private_data = pp; | |
265 | ||
266 | return 0; | |
267 | ||
268 | err_out_kfree: | |
269 | kfree(pp); | |
270 | err_out: | |
271 | ata_port_stop(ap); | |
272 | return rc; | |
273 | } | |
274 | ||
275 | ||
276 | static void pdc_port_stop(struct ata_port *ap) | |
277 | { | |
278 | struct device *dev = ap->host_set->dev; | |
279 | struct pdc_port_priv *pp = ap->private_data; | |
280 | ||
281 | ap->private_data = NULL; | |
282 | dma_free_coherent(dev, 128, pp->pkt, pp->pkt_dma); | |
283 | kfree(pp); | |
284 | ata_port_stop(ap); | |
285 | } | |
286 | ||
287 | ||
288 | static void pdc_reset_port(struct ata_port *ap) | |
289 | { | |
ea6ba10b | 290 | void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_CTLSTAT; |
1da177e4 LT |
291 | unsigned int i; |
292 | u32 tmp; | |
293 | ||
294 | for (i = 11; i > 0; i--) { | |
295 | tmp = readl(mmio); | |
296 | if (tmp & PDC_RESET) | |
297 | break; | |
298 | ||
299 | udelay(100); | |
300 | ||
301 | tmp |= PDC_RESET; | |
302 | writel(tmp, mmio); | |
303 | } | |
304 | ||
305 | tmp &= ~PDC_RESET; | |
306 | writel(tmp, mmio); | |
307 | readl(mmio); /* flush */ | |
308 | } | |
309 | ||
2cba582a | 310 | static void pdc_sata_phy_reset(struct ata_port *ap) |
1da177e4 LT |
311 | { |
312 | pdc_reset_port(ap); | |
313 | sata_phy_reset(ap); | |
314 | } | |
315 | ||
2cba582a JG |
316 | static void pdc_pata_phy_reset(struct ata_port *ap) |
317 | { | |
318 | /* FIXME: add cable detect. Don't assume 40-pin cable */ | |
319 | ap->cbl = ATA_CBL_PATA40; | |
320 | ap->udma_mask &= ATA_UDMA_MASK_40C; | |
321 | ||
322 | pdc_reset_port(ap); | |
323 | ata_port_probe(ap); | |
324 | ata_bus_reset(ap); | |
325 | } | |
326 | ||
1da177e4 LT |
327 | static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg) |
328 | { | |
329 | if (sc_reg > SCR_CONTROL) | |
330 | return 0xffffffffU; | |
b181d3b0 | 331 | return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
1da177e4 LT |
332 | } |
333 | ||
334 | ||
335 | static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, | |
336 | u32 val) | |
337 | { | |
338 | if (sc_reg > SCR_CONTROL) | |
339 | return; | |
b181d3b0 | 340 | writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4)); |
1da177e4 LT |
341 | } |
342 | ||
343 | static void pdc_qc_prep(struct ata_queued_cmd *qc) | |
344 | { | |
345 | struct pdc_port_priv *pp = qc->ap->private_data; | |
346 | unsigned int i; | |
347 | ||
348 | VPRINTK("ENTER\n"); | |
349 | ||
350 | switch (qc->tf.protocol) { | |
351 | case ATA_PROT_DMA: | |
352 | ata_qc_prep(qc); | |
353 | /* fall through */ | |
354 | ||
355 | case ATA_PROT_NODATA: | |
356 | i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma, | |
357 | qc->dev->devno, pp->pkt); | |
358 | ||
359 | if (qc->tf.flags & ATA_TFLAG_LBA48) | |
360 | i = pdc_prep_lba48(&qc->tf, pp->pkt, i); | |
361 | else | |
362 | i = pdc_prep_lba28(&qc->tf, pp->pkt, i); | |
363 | ||
364 | pdc_pkt_footer(&qc->tf, pp->pkt, i); | |
365 | break; | |
366 | ||
367 | default: | |
368 | break; | |
369 | } | |
370 | } | |
371 | ||
372 | static void pdc_eng_timeout(struct ata_port *ap) | |
373 | { | |
b8f6153e | 374 | struct ata_host_set *host_set = ap->host_set; |
1da177e4 LT |
375 | u8 drv_stat; |
376 | struct ata_queued_cmd *qc; | |
b8f6153e | 377 | unsigned long flags; |
1da177e4 LT |
378 | |
379 | DPRINTK("ENTER\n"); | |
380 | ||
b8f6153e JG |
381 | spin_lock_irqsave(&host_set->lock, flags); |
382 | ||
1da177e4 LT |
383 | qc = ata_qc_from_tag(ap, ap->active_tag); |
384 | if (!qc) { | |
385 | printk(KERN_ERR "ata%u: BUG: timeout without command\n", | |
386 | ap->id); | |
387 | goto out; | |
388 | } | |
389 | ||
390 | /* hack alert! We cannot use the supplied completion | |
391 | * function from inside the ->eh_strategy_handler() thread. | |
392 | * libata is the only user of ->eh_strategy_handler() in | |
393 | * any kernel, so the default scsi_done() assumes it is | |
394 | * not being called from the SCSI EH. | |
395 | */ | |
396 | qc->scsidone = scsi_finish_command; | |
397 | ||
398 | switch (qc->tf.protocol) { | |
399 | case ATA_PROT_DMA: | |
400 | case ATA_PROT_NODATA: | |
401 | printk(KERN_ERR "ata%u: command timeout\n", ap->id); | |
a7dac447 | 402 | drv_stat = ata_wait_idle(ap); |
a22e2eb0 AL |
403 | qc->err_mask |= __ac_err_mask(drv_stat); |
404 | ata_qc_complete(qc); | |
1da177e4 LT |
405 | break; |
406 | ||
407 | default: | |
408 | drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); | |
409 | ||
410 | printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n", | |
411 | ap->id, qc->tf.command, drv_stat); | |
412 | ||
a22e2eb0 AL |
413 | qc->err_mask |= ac_err_mask(drv_stat); |
414 | ata_qc_complete(qc); | |
1da177e4 LT |
415 | break; |
416 | } | |
417 | ||
418 | out: | |
b8f6153e | 419 | spin_unlock_irqrestore(&host_set->lock, flags); |
1da177e4 LT |
420 | DPRINTK("EXIT\n"); |
421 | } | |
422 | ||
423 | static inline unsigned int pdc_host_intr( struct ata_port *ap, | |
424 | struct ata_queued_cmd *qc) | |
425 | { | |
a22e2eb0 | 426 | unsigned int handled = 0; |
1da177e4 | 427 | u32 tmp; |
ea6ba10b | 428 | void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_GLOBAL_CTL; |
1da177e4 LT |
429 | |
430 | tmp = readl(mmio); | |
431 | if (tmp & PDC_ERR_MASK) { | |
a22e2eb0 | 432 | qc->err_mask |= AC_ERR_DEV; |
1da177e4 LT |
433 | pdc_reset_port(ap); |
434 | } | |
435 | ||
436 | switch (qc->tf.protocol) { | |
437 | case ATA_PROT_DMA: | |
438 | case ATA_PROT_NODATA: | |
a22e2eb0 AL |
439 | qc->err_mask |= ac_err_mask(ata_wait_idle(ap)); |
440 | ata_qc_complete(qc); | |
1da177e4 LT |
441 | handled = 1; |
442 | break; | |
443 | ||
444 | default: | |
ee500aab AL |
445 | ap->stats.idle_irq++; |
446 | break; | |
1da177e4 LT |
447 | } |
448 | ||
ee500aab | 449 | return handled; |
1da177e4 LT |
450 | } |
451 | ||
452 | static void pdc_irq_clear(struct ata_port *ap) | |
453 | { | |
454 | struct ata_host_set *host_set = ap->host_set; | |
ea6ba10b | 455 | void __iomem *mmio = host_set->mmio_base; |
1da177e4 LT |
456 | |
457 | readl(mmio + PDC_INT_SEQMASK); | |
458 | } | |
459 | ||
460 | static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *regs) | |
461 | { | |
462 | struct ata_host_set *host_set = dev_instance; | |
463 | struct ata_port *ap; | |
464 | u32 mask = 0; | |
465 | unsigned int i, tmp; | |
466 | unsigned int handled = 0; | |
ea6ba10b | 467 | void __iomem *mmio_base; |
1da177e4 LT |
468 | |
469 | VPRINTK("ENTER\n"); | |
470 | ||
471 | if (!host_set || !host_set->mmio_base) { | |
472 | VPRINTK("QUICK EXIT\n"); | |
473 | return IRQ_NONE; | |
474 | } | |
475 | ||
476 | mmio_base = host_set->mmio_base; | |
477 | ||
478 | /* reading should also clear interrupts */ | |
479 | mask = readl(mmio_base + PDC_INT_SEQMASK); | |
480 | ||
481 | if (mask == 0xffffffff) { | |
482 | VPRINTK("QUICK EXIT 2\n"); | |
483 | return IRQ_NONE; | |
484 | } | |
485 | mask &= 0xffff; /* only 16 tags possible */ | |
486 | if (!mask) { | |
487 | VPRINTK("QUICK EXIT 3\n"); | |
488 | return IRQ_NONE; | |
489 | } | |
490 | ||
491 | spin_lock(&host_set->lock); | |
492 | ||
493 | writel(mask, mmio_base + PDC_INT_SEQMASK); | |
494 | ||
495 | for (i = 0; i < host_set->n_ports; i++) { | |
496 | VPRINTK("port %u\n", i); | |
497 | ap = host_set->ports[i]; | |
498 | tmp = mask & (1 << (i + 1)); | |
c1389503 TH |
499 | if (tmp && ap && |
500 | !(ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR))) { | |
1da177e4 LT |
501 | struct ata_queued_cmd *qc; |
502 | ||
503 | qc = ata_qc_from_tag(ap, ap->active_tag); | |
504 | if (qc && (!(qc->tf.ctl & ATA_NIEN))) | |
505 | handled += pdc_host_intr(ap, qc); | |
506 | } | |
507 | } | |
508 | ||
509 | spin_unlock(&host_set->lock); | |
510 | ||
511 | VPRINTK("EXIT\n"); | |
512 | ||
513 | return IRQ_RETVAL(handled); | |
514 | } | |
515 | ||
516 | static inline void pdc_packet_start(struct ata_queued_cmd *qc) | |
517 | { | |
518 | struct ata_port *ap = qc->ap; | |
519 | struct pdc_port_priv *pp = ap->private_data; | |
520 | unsigned int port_no = ap->port_no; | |
521 | u8 seq = (u8) (port_no + 1); | |
522 | ||
523 | VPRINTK("ENTER, ap %p\n", ap); | |
524 | ||
525 | writel(0x00000001, ap->host_set->mmio_base + (seq * 4)); | |
526 | readl(ap->host_set->mmio_base + (seq * 4)); /* flush */ | |
527 | ||
528 | pp->pkt[2] = seq; | |
529 | wmb(); /* flush PRD, pkt writes */ | |
b181d3b0 AV |
530 | writel(pp->pkt_dma, (void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); |
531 | readl((void __iomem *) ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); /* flush */ | |
1da177e4 LT |
532 | } |
533 | ||
534 | static int pdc_qc_issue_prot(struct ata_queued_cmd *qc) | |
535 | { | |
536 | switch (qc->tf.protocol) { | |
537 | case ATA_PROT_DMA: | |
538 | case ATA_PROT_NODATA: | |
539 | pdc_packet_start(qc); | |
540 | return 0; | |
541 | ||
542 | case ATA_PROT_ATAPI_DMA: | |
543 | BUG(); | |
544 | break; | |
545 | ||
546 | default: | |
547 | break; | |
548 | } | |
549 | ||
550 | return ata_qc_issue_prot(qc); | |
551 | } | |
552 | ||
057ace5e | 553 | static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf) |
1da177e4 LT |
554 | { |
555 | WARN_ON (tf->protocol == ATA_PROT_DMA || | |
556 | tf->protocol == ATA_PROT_NODATA); | |
557 | ata_tf_load(ap, tf); | |
558 | } | |
559 | ||
560 | ||
057ace5e | 561 | static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf) |
1da177e4 LT |
562 | { |
563 | WARN_ON (tf->protocol == ATA_PROT_DMA || | |
564 | tf->protocol == ATA_PROT_NODATA); | |
565 | ata_exec_command(ap, tf); | |
566 | } | |
567 | ||
568 | ||
569 | static void pdc_ata_setup_port(struct ata_ioports *port, unsigned long base) | |
570 | { | |
571 | port->cmd_addr = base; | |
572 | port->data_addr = base; | |
573 | port->feature_addr = | |
574 | port->error_addr = base + 0x4; | |
575 | port->nsect_addr = base + 0x8; | |
576 | port->lbal_addr = base + 0xc; | |
577 | port->lbam_addr = base + 0x10; | |
578 | port->lbah_addr = base + 0x14; | |
579 | port->device_addr = base + 0x18; | |
580 | port->command_addr = | |
581 | port->status_addr = base + 0x1c; | |
582 | port->altstatus_addr = | |
583 | port->ctl_addr = base + 0x38; | |
584 | } | |
585 | ||
586 | ||
587 | static void pdc_host_init(unsigned int chip_id, struct ata_probe_ent *pe) | |
588 | { | |
ea6ba10b | 589 | void __iomem *mmio = pe->mmio_base; |
1da177e4 LT |
590 | u32 tmp; |
591 | ||
592 | /* | |
593 | * Except for the hotplug stuff, this is voodoo from the | |
594 | * Promise driver. Label this entire section | |
595 | * "TODO: figure out why we do this" | |
596 | */ | |
597 | ||
598 | /* change FIFO_SHD to 8 dwords, enable BMR_BURST */ | |
599 | tmp = readl(mmio + PDC_FLASH_CTL); | |
600 | tmp |= 0x12000; /* bit 16 (fifo 8 dw) and 13 (bmr burst?) */ | |
601 | writel(tmp, mmio + PDC_FLASH_CTL); | |
602 | ||
603 | /* clear plug/unplug flags for all ports */ | |
604 | tmp = readl(mmio + PDC_SATA_PLUG_CSR); | |
605 | writel(tmp | 0xff, mmio + PDC_SATA_PLUG_CSR); | |
606 | ||
607 | /* mask plug/unplug ints */ | |
608 | tmp = readl(mmio + PDC_SATA_PLUG_CSR); | |
609 | writel(tmp | 0xff0000, mmio + PDC_SATA_PLUG_CSR); | |
610 | ||
611 | /* reduce TBG clock to 133 Mhz. */ | |
612 | tmp = readl(mmio + PDC_TBG_MODE); | |
613 | tmp &= ~0x30000; /* clear bit 17, 16*/ | |
614 | tmp |= 0x10000; /* set bit 17:16 = 0:1 */ | |
615 | writel(tmp, mmio + PDC_TBG_MODE); | |
616 | ||
617 | readl(mmio + PDC_TBG_MODE); /* flush */ | |
618 | msleep(10); | |
619 | ||
620 | /* adjust slew rate control register. */ | |
621 | tmp = readl(mmio + PDC_SLEW_CTL); | |
622 | tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */ | |
623 | tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */ | |
624 | writel(tmp, mmio + PDC_SLEW_CTL); | |
625 | } | |
626 | ||
627 | static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) | |
628 | { | |
629 | static int printed_version; | |
630 | struct ata_probe_ent *probe_ent = NULL; | |
631 | unsigned long base; | |
ea6ba10b | 632 | void __iomem *mmio_base; |
1da177e4 LT |
633 | unsigned int board_idx = (unsigned int) ent->driver_data; |
634 | int pci_dev_busy = 0; | |
635 | int rc; | |
636 | ||
637 | if (!printed_version++) | |
a9524a76 | 638 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 LT |
639 | |
640 | /* | |
641 | * If this driver happens to only be useful on Apple's K2, then | |
642 | * we should check that here as it has a normal Serverworks ID | |
643 | */ | |
644 | rc = pci_enable_device(pdev); | |
645 | if (rc) | |
646 | return rc; | |
647 | ||
648 | rc = pci_request_regions(pdev, DRV_NAME); | |
649 | if (rc) { | |
650 | pci_dev_busy = 1; | |
651 | goto err_out; | |
652 | } | |
653 | ||
654 | rc = pci_set_dma_mask(pdev, ATA_DMA_MASK); | |
655 | if (rc) | |
656 | goto err_out_regions; | |
657 | rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK); | |
658 | if (rc) | |
659 | goto err_out_regions; | |
660 | ||
661 | probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL); | |
662 | if (probe_ent == NULL) { | |
663 | rc = -ENOMEM; | |
664 | goto err_out_regions; | |
665 | } | |
666 | ||
667 | memset(probe_ent, 0, sizeof(*probe_ent)); | |
668 | probe_ent->dev = pci_dev_to_dev(pdev); | |
669 | INIT_LIST_HEAD(&probe_ent->node); | |
670 | ||
374b1873 | 671 | mmio_base = pci_iomap(pdev, 3, 0); |
1da177e4 LT |
672 | if (mmio_base == NULL) { |
673 | rc = -ENOMEM; | |
674 | goto err_out_free_ent; | |
675 | } | |
676 | base = (unsigned long) mmio_base; | |
677 | ||
678 | probe_ent->sht = pdc_port_info[board_idx].sht; | |
679 | probe_ent->host_flags = pdc_port_info[board_idx].host_flags; | |
680 | probe_ent->pio_mask = pdc_port_info[board_idx].pio_mask; | |
681 | probe_ent->mwdma_mask = pdc_port_info[board_idx].mwdma_mask; | |
682 | probe_ent->udma_mask = pdc_port_info[board_idx].udma_mask; | |
683 | probe_ent->port_ops = pdc_port_info[board_idx].port_ops; | |
684 | ||
685 | probe_ent->irq = pdev->irq; | |
686 | probe_ent->irq_flags = SA_SHIRQ; | |
687 | probe_ent->mmio_base = mmio_base; | |
688 | ||
689 | pdc_ata_setup_port(&probe_ent->port[0], base + 0x200); | |
690 | pdc_ata_setup_port(&probe_ent->port[1], base + 0x280); | |
691 | ||
692 | probe_ent->port[0].scr_addr = base + 0x400; | |
693 | probe_ent->port[1].scr_addr = base + 0x500; | |
694 | ||
695 | /* notice 4-port boards */ | |
696 | switch (board_idx) { | |
697 | case board_20319: | |
698 | probe_ent->n_ports = 4; | |
699 | ||
700 | pdc_ata_setup_port(&probe_ent->port[2], base + 0x300); | |
701 | pdc_ata_setup_port(&probe_ent->port[3], base + 0x380); | |
702 | ||
703 | probe_ent->port[2].scr_addr = base + 0x600; | |
704 | probe_ent->port[3].scr_addr = base + 0x700; | |
705 | break; | |
706 | case board_2037x: | |
6c9e5eb5 | 707 | probe_ent->n_ports = 2; |
1da177e4 | 708 | break; |
f497ba73 TL |
709 | case board_20619: |
710 | probe_ent->n_ports = 4; | |
711 | ||
712 | pdc_ata_setup_port(&probe_ent->port[2], base + 0x300); | |
713 | pdc_ata_setup_port(&probe_ent->port[3], base + 0x380); | |
714 | ||
715 | probe_ent->port[2].scr_addr = base + 0x600; | |
716 | probe_ent->port[3].scr_addr = base + 0x700; | |
6c9e5eb5 | 717 | break; |
1da177e4 LT |
718 | default: |
719 | BUG(); | |
720 | break; | |
721 | } | |
722 | ||
723 | pci_set_master(pdev); | |
724 | ||
725 | /* initialize adapter */ | |
726 | pdc_host_init(board_idx, probe_ent); | |
727 | ||
728 | /* FIXME: check ata_device_add return value */ | |
729 | ata_device_add(probe_ent); | |
730 | kfree(probe_ent); | |
731 | ||
732 | return 0; | |
733 | ||
734 | err_out_free_ent: | |
735 | kfree(probe_ent); | |
736 | err_out_regions: | |
737 | pci_release_regions(pdev); | |
738 | err_out: | |
739 | if (!pci_dev_busy) | |
740 | pci_disable_device(pdev); | |
741 | return rc; | |
742 | } | |
743 | ||
744 | ||
745 | static int __init pdc_ata_init(void) | |
746 | { | |
747 | return pci_module_init(&pdc_ata_pci_driver); | |
748 | } | |
749 | ||
750 | ||
751 | static void __exit pdc_ata_exit(void) | |
752 | { | |
753 | pci_unregister_driver(&pdc_ata_pci_driver); | |
754 | } | |
755 | ||
756 | ||
757 | MODULE_AUTHOR("Jeff Garzik"); | |
f497ba73 | 758 | MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver"); |
1da177e4 LT |
759 | MODULE_LICENSE("GPL"); |
760 | MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl); | |
761 | MODULE_VERSION(DRV_VERSION); | |
762 | ||
763 | module_init(pdc_ata_init); | |
764 | module_exit(pdc_ata_exit); |